We didn't have better testing procedures and we got here. With better testing procedures, would we have gotten here sooner, in the same amount of time, or slow

We didn't have better testing procedures and we got here. With better testing procedures, would we have gotten here sooner, in the same amount of time, or slower? My contention is slower. And this seems obvious, because in any Cold War sabotage handbook for slowing down a project, the first rule is to insist on more documentation, more consensus, more verification and validation: i.e. more "testing" and less "push to prod".